Comparison

zkMe vs Outdid

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

zkMe

This app uses zero-knowledge technology to verify credentials without revealing personal information. It allows users to prove eligibility for services by answering yes/no questions about their data, ensuring privacy and control.

Highlights
  • Zero-knowledge credential verification
  • Decentralized and private-by-design
  • Proves eligibility without disclosing PII
  • Self-sovereign data control
  • Generates mathematical zero-knowledge proofs
  • Verifies age without revealing birthday
Features
Read full description

———— You, privately verified ———— zkMe verifies user credentials without disclosing any personal information to anyone! Through the use of innovative zero-knowledge technologies, it is the only KYC solution to be fully decentralized, private-by-design and compliant with global AML requirements. ———— Why is zkMe the ultimate tool to protect your privacy? ———— Unlike other eVerification solutions, the zkMe app actually does not share any personal identifiable information (PII) to anyone. By generating mathematical zero-knowledge proofs of knowledge (ZKP), the zkMe app only discloses yes/no answers to a list of predetermined eligibility questions on your credentials. For example, by using the zkMe app, you can prove you are over 18, without disclosing your actual birthday. ———— zkMe got you covered ———— Shield your Privacy - No credential verified through the zkMe app is stored on any centralized storage, making it virtually impossible for any private data leak. The only thing shared (if authorized by you) are yes/no answers to basic eligibility questions such as "are you over 18 years old?". Be Self-Sovereign - The zkMe app puts you in control of any and all sharing of your data, even if that data is anonymized through the use of zero-knowledge. You see and control which proofs have been generated and are active, which chain ecosystems these proofs are being used in and which applications have authorization to verify your eligibility. 3 easy steps to protect your identity online: - Verify credentials and generate ZK proofs - Connect your proofs to the ecosystems you are active in - Authorize the services you want to present proofs to Download the zkMe app to get your journey started today.

About

Outdid

Verify your identity online without revealing personal data or document photos. This app uses advanced privacy technology to confirm your details, ensuring your information remains secure and private. Once verified, future verifications can be completed with a single click.

Highlights
  • Private identity verification
  • No personal data sharing
  • No document photo sharing
  • One-click re-verification
  • Enhanced privacy technology
Read full description

With Outdid, you can verify your identity without sharing your personal data Protect your privacy without losing comfort Did you know that if someone has a photo of your ID document, they can impersonate you, and sometimes even incur debt on your name? When you verify your identity online, this is exactly what you always send - a photo of your ID. Unless you’re using Outdid. Leveraging novel privacy technology, Outdid allows you to finish your ID verification, but without sharing any personal data about you, or photos of your documents. Nobody sees your data, not even Outdid. For example, if a website wants to know that you are over 18, this is exactly what they’ll get - not your passport, not even your name. Keep the app after you use it, because next time a website which uses Outdid asks to verify you, you can complete the verification in one click. How’s that for convenience?

Screenshots

zkMe4 screens
Outdid3 screens

Verdict

The call

The clearest difference is rating: zkMe at 3.4 against Outdid's 1.0. zkMe also leads on ratings volume (5 vs 1). Outdid's advantage is update cadence (every 5 days vs every 2 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

zkMe holds the better App Store score, 3.4 against 1.0. That said, the two scores are not equally well evidenced: zkMe has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

zkMe ships an update every 2 weeks, Outdid every 5 days. The most recent releases landed on October 22, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 7 level
zkMe versus Outdid: the parameters behind the verdict, then further details
ParameterzkMeOutdid
PriceFreeFree
Rating3.4 (5 ratings) — better1.0 (1 ratings)
Positive reviews0.0% of reviews—
Number of ratings5 — better1
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS1515.0
Further details — not scored
Size211 MB66 MB
Age rating17+4+
DeveloperzkMe Technology LimitedPUI Ltd

Customer experience

zkMe

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Outdid

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

zkMe

No in-app purchases

None

Outdid

No in-app purchases

Questions

Is zkMe free?
zkMe is free to download, with no in-app purchases.
Is Outdid free?
Outdid is free to download, with no in-app purchases.
Which has better reviews, zkMe or Outdid?
zkMe is rated higher. zkMe averages 3.4 out of 5 from 5 ratings, while Outdid averages 1.0 from 1 ratings.
Do zkMe or Outdid have ads?
Neither zkMe nor Outdid shows ads.
Which is updated more often, zkMe or Outdid?
zkMe ships an update every 2 weeks, and Outdid every 5 days. Most recently, zkMe was updated on October 22, 2026 and Outdid on September 23, 2026.

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